#secureboot
28 posts · Last used 26d
heise+ | Auswirkungen der neuen Secure-Boot-Zertifikate für Linux
Nach 15 Jahren sind die Secure-Boot-Zertifikate abgelaufen, mit denen auch Linux-Bootloader signiert sind. Wir erklären, welche Auswirkungen das auf Linux hat.
https://www.heise.de/ratgeber/Auswirkungen-der-neuen-Secure-Boot-Zertifikate-fuer-Linux-11371220.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon
#BIOS #Debian #Hardware #IT #Linux #SecureBoot #Ubuntu #news
Details and PoC for a Cisco Secure Boot bypass vulnerability are public. Learn how this Cisco Secure Boot bypass affects UCS servers and appliances.
#Cisco #SecureBoot #CVE202620293 #UEFI #Cybersecurity
heise+ | Neue Secure-Boot-Zertifikate für Linux
Microsofts Secure-Boot-Zertifikat für Linux ist abgelaufen. Damit Linux auch in Zukunft bootet, müssen Microsofts neue Zertifikate eingespielt werden.
https://www.heise.de/ratgeber/Neue-Secure-Boot-Zertifikate-fuer-Linux-11421350.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon
#BIOS #IT #Linux #Microsoft #SecureBoot #UEFI #Updates #news
does anyone use secure boot on guix system and could help me figure out how to get that working? or if you don't use it, is there some alternative option you use for security, or a reason you don't feel it's necessary?
#guix #secureboot
Replying to
something i came across looking into distributions to replace debian is the stance that qubes takes on secure boot:
"UEFI Secure Boot is not supported out of the box as UEFI support in Xen is very basic. Arguably secure boot reliance on UEFI integrity is not the best design. [...] See the [Heads project] for a better-designed non-UEFI-based secure boot scheme with very good support for Qubes."
https://doc.qubes-os.org/en/latest/introduction/faq.html#is-secure-boot-supported
alas, i don't think my framework amd laptop (their first-gen amd) supports open firmware...
#debian #secureboot #qubes
Ein Microsoft-Zertifikat ist Ende Juni abgelaufen – seitdem entscheidet Microsofts Signatur, ob dein Linux-Rechner überhaupt noch hochfährt. Der Artikel zeigt konkrete Lösungen und ordnet ein, warum das ein Souveränitätsproblem ist. Reden wir drüber!
https://www.chrislo.de/blog/2026-08-10-07-25-18-microsoft-entscheidet-ob-dein-linux-startet/
#chrislo #digitaleunabhängigkeit #Linux #Microsoft #SecureBoot #UEFI #ITSicherheit #DigitaleSouveränität #OpenSource #Datenschutz
Hat einer #Mosby nach einer #SecureBoot-Violation probiert? Funktioniert es? Gab es Probleme?
#Linux #uefi #efi
youtu.be/bG6Ub0fGAL0?is…
Fix Secure Boot FOREVER with Mosby
I've updated my tutorial on how to enable SecureBoot on Gentoo using shim & GRUB, there's a few significant changes compared to the first version I made:
- There are less manual steps as I rely more on the improvements in Gentoo's GRUB package
- There is no need to regenerate the bootloader when installing or removing kernels
- Post-install scripts are provided to automatically update both bootloaders
https://www.setphaserstostun.org/posts/secure-boot-on-gentoo-with-shim-grub/
Replying to
In 2011 Microsoft seems to have attempted to prevent installation of alternative operating systems on PCs using a new technology called UEFI "Secure Boot". The worst case scenario never materialized and installing "alternative" operating systems is still possible.
5/21
#microsoft #uefi #secureboot
Sunday morning, and currently fixing an unhappy update on Linux Mint 22.3 yesterday.
To my understanding, Mint is not the cause, but it's the Nvidia drivers which were not rebuilt and signed (Secure Boot) correctly.
Fortunately, ChatGPT is helping me out here or this would have been a horrible mess... :(
#linux #nvidia #dkms #secureboot
Frog and Toad Are Chainloaded
frog put the UEFI app signatures in a box. there. now we will not boot any more unsigned UEFI apps. but we can disable SecureBoot said toad. that is true said frog. that is true. frog knew. frog always knew. the box was never locked. toad found the off switch in four seconds. three weeks of signed shim work gone. frog does not cry frog just stares at the mokutil prompt
#infosec #SecureBoot
Discover the major challenges IT admins face with the UEFI CA 2023 update. Learn why Microsoft, HP, and other OEMs cause BitLocker recovery loops.
#UEFICA2023 #SecureBoot #Microsoft #Windows11 #ITAdmin #CyberSecurity
Secure Boot: Die bittere Wahrheit
Bereits die UEFI genannte Erweiterung des guten alten BIOS litt und leidet unter unnötiger Komplexität und damit zwangsläufig unter diversen Sicherheitslücken. Manch eine von denen riecht, als ob sie nicht einfach auf handwerkliche Fehler zurückgeht oder der überbordenden Komplexität geschuldet ist, sondern eine absichtliche Hintertür darstellen könnte. Eines der Probleme war und ist, dass Schädlinge von Windows aus bis auf das UEFI durchgreifen können und sich dort dauerhaft einnisten. So können sie sogar Neuinstallationen überleben. - Zum angeblichen Schutz des UEFI hat Microsoft (MS) Secure Boot (SB) ersonnen und mit seiner Marktmacht auch durchgesetzt. ... Weiterlesen:
https://www.pc-fluesterer.info/wordpress/2026/07/18/secure-boot-die-bittere-wahrheit/
#linux #Microsoft #sicherheit #wissen #uefi #secureboot
Something I terribly hate about #Linux is its unwillingness to hibernate with #SecureBoot enabled. I don't want to keep my computer idle for several hours just to preserve the states of the currently running programs.
#Windows' user experience is so much more convenient here: It automatically shuts down to conserve energy when you don't use the computer for a while, and when you boot again, it restores everything in memory from the #swap file, so you can continue without measurable interruption.
Replying to
Linus #Torvalds' justification is security: If secure boot is enabled, this must mean that the user does not wish the memory to be filled with data from the disk because it is untrusted. (Correct me if I'm wrong.)
However, is it really still part of the boot process when you load the #SwapFile into memory?
Also, if you distrust the disk, why would you even load the operating system from it? By Linus' logic, #Linux should only support #SecureBoot in combination with disk encryption. 🤔
Fascinating, that this 7th gen Intel box, a HP EliteDesk 800 G3 SFF still receives firmware updates!
#Ubuntu and #fwupd is pretty neat.
This one updates #SecureBoot stuff, which i'm not using on this box. This box will be replaced soon - i'm leaving this decision to "the next guy" ...let's see how well this box re-sells, without RAM. 😅
Bit-Rauschen, der Prozessor-Podcast: Das Secure-Boot-Problem von Windows 11
Microsoft werkelt an der Schutzfunktionen UEFI Secure Boot herum, sodass manche Rechner nicht mehr starten: Folge 2025/13 des Podcasts Bit-Rauschen.
https://www.heise.de/meinung/Bit-Rauschen-der-Prozessor-Podcast-Das-Secure-Boot-Problem-von-Windows-11-11336226.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon
#BitRauschen #IT #Journal #UEFI #SecureBoot #Windows #news
Ventoy 1.1.14 aktualisiert Unterstützung für Secure Boot
https://linuxnews.de/ventoy-1-1-14-aktualisiert-unterstuetzung-fuer-secure-boot/ #ventoy #secureboot #shim #linux #linuxnews








